public Context convert(
WhereClause whereClause,
MapperService mapperService,
IndexFieldDataService indexFieldDataService,
IndexCache indexCache)
throws UnsupportedFeatureException {
Context ctx = new Context(inputSymbolVisitor, mapperService, indexFieldDataService, indexCache);
if (whereClause.noMatch()) {
ctx.query = Queries.newMatchNoDocsQuery();
} else if (!whereClause.hasQuery()) {
ctx.query = Queries.newMatchAllQuery();
} else {
ctx.query = VISITOR.process(whereClause.query(), ctx);
}
if (LOGGER.isTraceEnabled()) {
if (whereClause.hasQuery()) {
LOGGER.trace(
"WHERE CLAUSE [{}] -> LUCENE QUERY [{}] ",
SymbolFormatter.format(whereClause.query()),
ctx.query);
}
}
return ctx;
}
@Override
protected Query visitSymbol(Symbol symbol, Context context) {
throw new UnsupportedOperationException(
SymbolFormatter.format("Can't build query from symbol %s", symbol));
}
private static Query raiseUnsupported(Function function) {
throw new UnsupportedOperationException(
SymbolFormatter.format("Cannot convert function %s into a query", function));
}